武汉市马鞍山森林公园马尾松年龄种群结构与分布格局

Age structure and distribution pattern of Pinus massoniana population in Wuhan Ma'an Mountain forest park

通过对武汉市马鞍山森林公园马尾松 ( Pinus massoniana Lamb.)种群大小级、存活曲线、高度级、分布格局的研究 ,探讨了该地区马尾松种群的结构和分布格局 .结果表明 :马尾松种群年龄结构属于中衰型 ;种群个体在空间配置上多居于乔木层 ,灌草丛中有少量分布 ;同时 ,马尾松种群呈集群分布格局 ,这可能与马尾松的生物学特性有关 ;但在不同发育阶段 ,种群分布格局不同 ,随种群年龄的增加和径级的增大 ,分布格局由集群分布变为随机分布 。

Based on the analysis, of size classes, survival curves, height classes and distribution pattern, this paper discussed the structure and distribution pattern of Pinus massoniana Lamb in Wuhan Maan mountain forest park which revealed the population age structure belonged to mid senescent type. As for the teight class structure, the trees of 6～8 metres were the most numerous, up 35% of the total; the trees of 8～10 metres height were 28%. And the population also exhibited clump distribution pattern which may be determined by its biological properties. But in different development stages,the population distribution pattern were different. With the increment of age and breast diameter, the population distribution changed from clump to poisson as the results of the poplation amount dynamics caused by inner and inter population competition.